Restructuring and Impairment Charges (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		18 Months Ended	3 Months Ended		6 Months Ended	3 Months Ended	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Europe segment [Member]	Sep. 30, 2012 North America and Europe segments [Member]	Sep. 30, 2013 Cost of Sales [Member]	Sep. 30, 2013 Cost of Sales [Member]	Sep. 30, 2013 Restructuring Expense [Member]	Sep. 30, 2013 Restructuring Expense [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	$ 0	$ 16.7	$ 0	$ 16.7	$ 24.1	$ 16.7
Accrued Restructuring Liability [Roll Forward]
Beginning Balance	11.4	4.3	11.6	0
Additions	0.5	1.1	0.8	5.6
Payments	(1.6)	(0.8)	(2.2)	(1.0)
Effect of exchange rate changes	0.4	0.1	0.5	0.1
Ending Balance	10.7	4.7	10.7	4.7
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits	0.5	1.1	0.8	5.6	15.6
Accelerated depreciation	2.1	0	4.3	0
Other repositioning costs	0.1	0.2	0.3	0.3	6.8
Total restructuring and repositioning expenses	$ 2.7	$ 1.3	$ 5.4	$ 5.9			$ 2.1	$ 4.3	$ 0.6	$ 1.1